Uplink Control Information Transmission Method and Apparatus

ABSTRACT

Example uplink control information transmission methods and apparatus are provided. One example method includes receiving first indication information, where the first indication information includes a parameter β and a parameter α. First information is determined based on the first indication information. A quantity of resources for sending uplink control information (UCI) is determined based on first information. The first information includes scheduling information, a ratio of a quantity of bits of the UCI to a quantity of bits of data, a first preset parameter, the parameter β, a quantity of available resources of a physical uplink shared channel (PUSCH), and the parameter α. The parameter β is an offset of the UCI. The parameter α is configured by higher layer signaling and the parameter α is less than 1. The UCI is sent to a network device based on the determined quantity of resources for sending the UCI.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/871,590, filed on May 11, 2020, which is a continuation ofInternational Application No. PCT/CN2018/107102, filed on Sep. 21, 2018,which claims priority to Chinese Patent Application No. 201711148190.1,filed on Nov. 17, 2017. All of the afore-mentioned patent applicationsare hereby incorporated by reference in their entireties.

TECHNICAL FIELD

This application relates to the field of wireless communicationtechnologies, and in particular, to an uplink control informationtransmission method and apparatus.

BACKGROUND

Uplink control information (UCI) in long term evolution (LTE) includes ahybrid automatic repeat request-acknowledgement (HARQ-ACK), a schedulingrequest (SR), and channel state information (CSI) (a channel qualityindication (CQI), a precoding matrix indication (PMI), and a rankindication (RI)). The HARQ-ACK is used to feed back a receiving statusof a downlink data channel, that is, a physical downlink shared channel(PDSCH). When performing correct receiving, user equipment (UE) sends anACK. When performing incorrect receiving, the UE sends a negativeacknowledgement (NACK). A base station determines a next schedulingpolicy, for example, retransmission or new transmission, based onfeedback information of the UE for the PDSCH channel. The SR isscheduling request information sent by the UE to the base station, andindicates that the UE needs to send uplink data. The CSI is channelstate information fed back by the UE to the base station after the UEmeasures a channel state, and the information further includes theCQI/PMI/RI. The CQI is channel quality indication information, and isused to directly feed back channel quality. The base station may furtherdetermine, based on the CQI, a modulation and coding scheme (MCS) forsending data. When a value of the fedback CQI is large, a relativelyhigh modulation and coding scheme and a relatively high code rate may beused, so that more information is carried on a limited resource, therebyimproving a data transmission rate. When a value of the fedback CQI isrelatively small, a relatively low modulation and coding scheme and arelatively low code rate may be used, so that more time-frequencyresources are used to transmit data, thereby improving data transmissionreliability. In addition, the UE measures CQIs of different frequencydomain resources, so that the based station can schedule data on afrequency domain resource with good channel quality, to obtain afrequency domain scheduling gain. The PMI is a precoding matrixidentifier that is for sending data and that is fed back by the UE tothe base station based on measured channel quality. The base station maydetermine a corresponding precoding matrix based on fedback PMIinformation. The RI is rank indication information, and is used to feedback, to the base station, a quantity of layers into which the channelcan be separated. A larger quantity of layers indicates a larger amountof data that can be transmitted simultaneously. In addition, there issome other information, such as a channel state information referencesignal resource indicator (CRI), used to feed back, to the base station,a measurement resource whose measured channel quality is the best in aplurality of measured measurement resources.

Control information may be transmitted by using two channels: a physicaluplink control channel (PUCCH) and a physical uplink shared channel(PUSCH). In the LTE release 8, UE is not supported in simultaneouslysending control information by using a PUCCH and sending datainformation by using a PUSCH. When UCI and data are transmittedsimultaneously, multiplexing needs to be performed for the UCI and thedata. This helps to maintain an uplink single-carrier characteristic,thereby improving uplink coverage of an edge user. In the LTE release10, a high-layer parameter simultaneous PUCCH-PUSCH that supportssimultaneous transmission of UCI and data is introduced. Whensimultaneous transmission of UCI and data is configured, one part of theUCI is supported in being transmitted on a PUCCH, and the other part ofthe UCI is supported in being transmitted on a PUSCH. When simultaneoustransmission is not configured, if the UCI and the data are transmittedsimultaneously, the UCI needs to be carried on the PUSCH throughmultiplexing.

Specifically, when the UCI is carried on the PUSCH through multiplexing,different information is processed in different manners. A processingmanner in LTE is as follows: First, in terms of data transmission, UEgenerates a transport block (TB) at a medium access control (MAC) layer,and adds cyclic redundancy check (CRC) bits to the transport block.Then, the TB is segmented into code blocks, and CRC bits are added toeach code block. Then, each code block to which the CRC bits are addedis entered into an encoder for coding. After the coding, rate matchingneeds to be performed on coded data based on a quantity of actualtime-frequency resources. After the rate matching, code blocks arecascaded to form a string of bit stream of data. Second, in terms of UCItransmission, after a CQI is coded, multiplexing needs to be performedfor a coded CQI and the data. After an ACK and an RI are coded, a codedACK and a coded RI are entered into an interleaver together with theCQI/data. The ACK is entered into the interleaver in a data puncturingmanner, and the ACK is at a location next to a pilot of the PUSCH. TheRI is at a location next to the ACK, and a rate matching method is usedfor the RI. Such placing is made in consideration that the ACK can haverelatively good channel estimation performance and the RI has a specificeffect on receiving the CQI/PMI correctly. In a process in which the UCIis carried on the PUSCH for transmission, a specific resource isportioned out of a time-frequency resource originally scheduled for thePUSCH, to carry the control information. Currently, in LTE, a resourcefor transmitting UCI is determined based on a quantity of informationbits of the UCI and a quantity of information bits of data. However, inNR, a quantity of information bits of UCI increases a lot. Therefore, itis a key problem to implement resource allocation to balancetransmission performance of UCI and data.

SUMMARY

This application provides an uplink control information transmissionmethod and apparatus, to allocate sufficient resources to data and UCIduring initial data transmission, thereby improving system performance.

According to a first aspect, this application provides an uplink controlinformation transmission method, and the method includes:

determining, by a terminal device based on first information, a quantityof resources for sending UCI, where the first information includes anyone of the following information combinations: a combination ofscheduling information, a ratio of a quantity of bits of the UCI to asum of the quantity of bits of the UCI and a quantity of bits of data, afirst preset parameter, a parameter β, and a quantity of availableresources of a PUSCH; a combination of scheduling information, a firstpreset parameter, a parameter β, a quantity of available resources of aPUSCH, and a code rate of scheduled data; or a combination of schedulinginformation, a ratio of a quantity of bits of the UCI to a quantity ofbits of data, a first preset parameter, a parameter β, a quantity ofavailable resources of a PUSCH, and a parameter α; and sending, by theterminal device, the UCI to a network device based on the determinedquantity of resources for sending the UCI.

The terminal device sends the UCI to the network device based on thedetermined quantity of resources for sending the UCI. Because theterminal device uses the ratio of the quantity of bits of the UCI to thequantity of bits of the data as a proportion baseline for resourcedivision when determining the quantity of resources for sending the UCI,a case in which all resources are allocated to the UCI during initialtransmission and the data cannot be transmitted can be avoided.

In a possible design, the first preset parameter is a product of a firstpreset value and a quantity of frequency domain resource elements (REs)scheduled for the PUSCH and/or a product of a second preset value and aquantity of symbols of the PUSCH.

In a possible design, the first preset value is a bandwidth and/or aquantity of symbols.

In a possible design, the terminal device determines, according toFormula (1), Formula (2), Formula (3), Formula (4), or Formula (5), thequantity of resources for sending the UCI, where

Formula (1) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B + O} \right\rceil,C} \right)}},} & (1)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is an offset of the UCI relativeto a reference code rate;

Formula (2) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (2)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is a preset offset;

Formula (3) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{\beta_{offset}^{PUSCH}{O \cdot A}}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (3)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the code rate of the data, C is a maximumquantity of resources for transmitting the UCI in a quantity ofscheduled available resources of the data during transmission, andβ_(offset) ^(PUSCH) is a preset offset; and

Formula (5) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil,{\alpha C}} \right)}},} & (5)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is an offset of the UCI relative to areference code rate, and α is a parameter.

The terminal device sends the UCI to the network device based on thequantity of resources that is for sending the UCI and that is determinedaccording to the foregoing formula. Because the terminal device uses theratio of the quantity of bits of the UCI to the quantity of bits of thedata as a proportion baseline for resource division when determining thequantity of resources for sending the UCI, a case in which all resourcesare allocated to the UCI during initial transmission and the data cannotbe transmitted can be avoided.

In a possible design, a value of C is associated with a mapping mannerof the UCI; and the mapping manner of the UCI includes that a quantityof symbols to which the UCI is mapped on a time domain resource is lessthan or equal to a third preset value and a quantity of symbols to whichthe UCI is mapped on a frequency domain resource is related to a UCItype, or that a quantity of symbols to which the UCI is mapped on afrequency domain resource is less than or equal to a fourth preset valueand a quantity of symbols to which the UCI is mapped on a time domainresource is related to a UCI type.

The terminal device may determine the value in the foregoing formulasbased on the mapping manner of the UCI.

In a possible design, the third preset value is one or more of thefollowing values: a preset quantity of symbols near a demodulationreference signal (DMRS), a value related to the quantity of symbols ofthe PUSCH, a value related to whether the PUSCH supports frequencyhopping, and a value related to whether an additional DMRS is supported.

In a possible design, the fourth preset value is one or more of thefollowing values: a preset quantity of REs, a value related to thequantity of symbols of the PUSCH, a value related to a bandwidth of thePUSCH, and a value related to a phase tracking reference signal (PTRS)of the PUSCH.

In a possible design, the terminal device determines, according toFormula (6), Formula (7), Formula (8), or Formula (9), the quantity ofresources for sending the UCI, where

Formula (6) is:

$\begin{matrix}{{Q^{\prime} = \left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B + O} \right\rceil},} & (6)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,and β_(offset) ^(PUSCH) is an offset of the UCI relative to a referencecode rate;

Formula (7) is:

$\begin{matrix}{{Q^{\prime} = \left\lceil \frac{O \cdot A}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil},} & (7)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,and β_(offset) ^(PUSCH) is a preset offset;

Formula (8) is:

$\begin{matrix}{{Q^{\prime} = \left\lceil \frac{\beta_{offset}^{PUSCH}{O \cdot A}}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil},} & (8)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,and β_(offset) ^(PUSCH) is a preset offset; and

Formula (9) is:

Q′=┌O·β _(offset) ^(PUSCH) ·R┐  (9), where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, R is the code rate of the data, and β_(offset)^(PUSCH) is a preset offset.

According to a second aspect, this application provides an uplinkcontrol information transmission method, including:

sending, by a network device, first indication information to a terminaldevice, where the first indication information includes one or more ofscheduling information, a parameter β, and a parameter α, the firstindication information is used by the terminal to determine firstinformation, and the first information includes any one of the followinginformation combinations: a combination of the scheduling information, aratio of a quantity of bits of UCI to a sum of the quantity of bits ofthe UCI and a quantity of bits of data, a first preset parameter, theparameter β, and a quantity of available resources of a PUSCH; acombination of the scheduling information, a first preset parameter, theparameter β, a quantity of available resources of a PUSCH, and a coderate of scheduled data; or a combination of the scheduling information,a ratio of a quantity of bits of UCI to a quantity of bits of data, afirst preset parameter, the parameter β, a quantity of availableresources of a PUSCH, and the parameter α.

According to a third aspect, this application provides an uplink controlinformation transmission apparatus, including a processing unit and acommunications unit, where

the processing unit is configured to determine, based on firstinformation, a quantity of resources for sending UCI, where the firstinformation includes any one of the following information combinations:a combination of scheduling information, a ratio of a quantity of bitsof the UCI to a sum of the quantity of bits of the UCI and a quantity ofbits of data, a first preset parameter, a parameter β, and a quantity ofavailable resources of a PUSCH; a combination of scheduling information,a first preset parameter, a parameter β, a quantity of availableresources of a PUSCH, and a code rate of scheduled data; or acombination of scheduling information, a ratio of a quantity of bits ofthe UCI to a quantity of bits of data, a first preset parameter, aparameter β, a quantity of available resources of a PUSCH, and aparameter α; and

the communications unit is configured to send the UCI to a networkdevice based on the quantity of resources that is for sending the UCIand that is determined by the processing unit.

In a possible design, the first preset parameter is a product of a firstpreset value and a quantity of frequency domain resource elements REsscheduled for the PUSCH and/or a product of a second preset value and aquantity of symbols of the PUSCH.

In a possible design, the first preset value is a bandwidth and/or aquantity of symbols.

In a possible design, the processing unit is specifically configured to:determine, according to Formula (1), Formula (2), Formula (3), Formula(4), or Formula (5), the quantity of resources for sending the UCI,where

Formula (1) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B + O} \right\rceil,C} \right)}},} & (1)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is an offset of the UCI relativeto a reference code rate;

Formula (2) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (2)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is a preset offset;

Formula (3) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{\beta_{offset}^{PUSCH}{O \cdot A}}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (3)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, R is the code rate of the data, C is a maximumquantity of resources for transmitting the UCI in a quantity ofscheduled available resources of the data during transmission, andβ_(offset) ^(PUSCH) is a preset offset; and

Formula (5) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil,{\alpha C}} \right)}},} & (5)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is an offset of the UCI relative to areference code rate, and α is a parameter.

In a possible design, a value of C is associated with a mapping mannerof the UCI; and the mapping manner of the UCI includes that a quantityof symbols to which the UCI is mapped on a time domain resource is lessthan or equal to a third preset value and a quantity of symbols to whichthe UCI is mapped on a frequency domain resource is related to a UCItype, or that a quantity of symbols to which the UCI is mapped on afrequency domain resource is less than or equal to a fourth preset valueand a quantity of symbols to which the UCI is mapped on a time domainresource is related to a UCI type.

In a possible design, the third preset value is one or more of thefollowing values:

a preset quantity of symbols near a DMRS, a value related to thequantity of symbols of the PUSCH, a value related to whether the PUSCHsupports frequency hopping, and a value related to whether an additionalDMRS is supported.

In a possible design, the fourth preset value is one or more of thefollowing values:

a preset quantity of REs, a value related to the quantity of symbols ofthe PUSCH, a value related to a bandwidth of the PUSCH, and a valuerelated to a PTRS of the PUSCH.

According to a fourth aspect, an embodiment of this application providesan uplink control information transmission apparatus, and the apparatusmay be a terminal device, or may be a chip in a terminal device. Theapparatus has a function for implementing each embodiment in the firstaspect. The function may be implemented by hardware, or may beimplemented by hardware by executing corresponding software. Thehardware or software includes one or more modules corresponding to thefunction.

In a possible design, when the apparatus is the terminal device, theterminal device includes a processing unit and a communications unit.The processing unit may be, for example, a processor; the communicationsunit may be, for example, a transceiver; and the transceiver includes aradio frequency circuit. Optionally, the terminal device furtherincludes a storage unit, and the storage unit may be, for example, amemory. When the terminal device includes the storage unit, the storageunit stores a computer executable instruction. The processing unit isconnected to the storage unit, and the processing unit executes thecomputer executable instruction stored in the storage unit, so that theterminal device performs the uplink control information transmissionmethod in any one of the first aspect or the possible designs of thefirst aspect.

In another possible design, when the apparatus is the chip in theterminal device, the chip includes a processing unit and acommunications unit. The processing unit may be, for example, aprocessor; and the communications unit may be, for example, aninput/output interface, a pin, or a circuit. The processing unit canexecute a computer executable instruction stored in a storage unit, toperform the uplink control information transmission method in any one ofthe first aspect or the possible designs of the first aspect.Optionally, the storage unit is a storage unit in the chip, for example,a register or a cache. Alternatively, the storage unit may be a storageunit that is in the terminal device and that is located outside thechip, for example, a read-only memory, another type of static storagedevice that can store static information and an instruction, or a randomaccess memory.

According to a fifth aspect, this application further provides acommunications apparatus, including a processing element and a storageelement. The storage element is configured to store a program, and whenthe program is invoked by the processing element, the communicationsapparatus is configured to perform the methods in the foregoing aspects.

According to a sixth aspect, this application further provides acomputer readable storage medium, and the computer readable storagemedium stores an instruction. When the instruction runs on a computer,the computer is enabled to perform the methods in the foregoing aspects.

According to a seventh aspect, this application further provides acomputer program product that includes an instruction. When the computerprogram product runs on a computer, the computer is enabled to performthe methods in the foregoing aspects.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a system architecture according to thisapplication;

FIG. 2 is a schematic flowchart of an uplink control informationtransmission method according to this application;

FIG. 3 is a schematic diagram of resource mapping according to thisapplication;

FIG. 4A and FIG. 4B are a schematic diagram of resource mappingaccording to this application;

FIG. 5A and FIG. 5B are a schematic diagram of resource mappingaccording to this application;

FIG. 6 is a schematic diagram of resource mapping according to thisapplication;

FIG. 7 is a schematic diagram of resource mapping according to thisapplication;

FIG. 8A and FIG. 8B are a schematic diagram of resource mappingaccording to this application;

FIG. 9A to FIG. 9C are a schematic diagram of resource mapping accordingto this application;

FIG. 10A and FIG. 10B are a schematic diagram of resource mappingaccording to this application;

FIG. 11 is a schematic structural diagram of an uplink controlinformation transmission apparatus according to this application; and

FIG. 12 is a schematic structural diagram of an uplink controlinformation transmission apparatus according to this application.

DESCRIPTION OF EMBODIMENTS

FIG. 1 is a schematic diagram of a system architecture to which thisapplication is applicable. As shown in FIG. 1, the system architectureincludes a network device 101 and one or more terminal devices 102. Thenetwork device 101 may transmit downlink data to the terminal device 102through a network, and the terminal device 102 may transmit uplink datato the network device 101 through the network.

In this application, the network device may be a base station (BS)device. The base station device may also be referred to as a basestation, and is an apparatus that is deployed in a radio access networkto provide a wireless communications function. For example, a devicethat provides a base station function in a 2G network includes a basetransceiver station (BTS) and a base station controller (BSC); a devicethat provides a base station function in a 3G network includes a NodeBand a radio network controller (RNC); a device that provides a basestation function in a 4G network includes an evolved NodeB (eNB); and adevice that provides a base station function in a 5G network includes anew radio NodeB (gNB), a centralized unit (CU), a distributed unit, anda new radio controller.

The terminal device is a device that has a wirelesstransmission/reception function. The terminal device may be deployed onland, and include an indoor device, an outdoor device, a hand-helddevice, or a vehicle-mounted device; or may be deployed on the water(for example, on a ship); or may be deployed in the air (for example, ona plane, a balloon, or a satellite). The terminal device may be a mobilephone, a tablet (Pad), a computer having a wirelesstransmission/reception function, a virtual reality (VR) terminal device,an augmented reality (AR) terminal device, a wireless terminal device inindustrial control, a wireless terminal device in self-driving, awireless terminal device in remote medical, a wireless terminal devicein a smart grid, a wireless terminal device in transportation safety, awireless terminal device in a smart city, a wireless terminal device ina smart home, or the like.

In this application, the system architecture shown in FIG. 1 is mainlyused as an example for description, but this application sets no limitedthereto. For example, this application may be further applied to asystem architecture in which a macro base station communicates with amicro base station. This is not specifically limited.

A communications system to which the foregoing system architecture isapplicable includes but is not limited to: time division duplex-longterm evolution (TDD LTE), frequency division duplex-long term evolution(FDD LTE), long term evolution-advanced (LTE-A), and various futureevolved wireless communications systems (for example, a new radio accesstechnology (NR) system).

Currently, in LTE, a channel quality indication (CQI)/precoding matrixindication (PMI) in uplink control information (UCI) has a limitedquantity of bits, and each carrier has a maximum of 64 bits. Consideringthat CQIs/PMIs of a maximum of 16 cells need to be fed back, a maximumquantity of bits is 64×16=1024. This is smaller than a quantity of bitsof data, and therefore has little impact on performance of the UCI andthe data.

However, in NR, a quantity of information bits of UCI becomes large. Forexample, an amount of information of a channel state information part 2(CSI part 2) of a single cell reaches up to thousands of bits. In thiscase, the quantity of information bits of the UCI may be very likely toexceed a quantity of information bits of data. All resource elements(RE) in a PUSCH except resource elements used to transmit a CSI part 1are to be used to transmit the CSI part 2, and therefore the data cannotbe transmitted. Consequently, the data actually cannot be sent at a basestation side.

To resolve this technical problem. FIG. 2 shows an example of an uplinkcontrol information transmission procedure according to thisapplication. The procedure may be performed by a terminal device.

As shown in FIG. 2, the procedure specifically includes the followingsteps.

Step 201: The terminal device determines, based on first information, aquantity of resources for sending UCI.

Step 202: The terminal device sends the UCI to a network device based onthe determined quantity of resources for sending the UCI.

In this application, the UCI includes but is not limited to thefollowing information: a hybrid automatic repeat request-acknowledgement(HARQ-ACK), a scheduling request (SR), a CSI part 1, a CSI part 2, andthe like. CSI information may further include information such as a CQI,a PMI, and a rank indication (RI). Before step 201, the network devicesends first indication information to the terminal device. The firstindication information includes scheduling information, a parameter β,and a parameter α. The terminal device may determine the firstinformation based on the first indication information. The firstinformation may include any one of the following informationcombinations: a combination of the scheduling information, a ratio of aquantity of bits of the UCI to a sum of the quantity of bits of the UCIand a quantity of bits of data, a first preset parameter, the parameterβ, and a quantity of available resources of a PUSCH; a combination ofthe scheduling information, a first preset parameter, the parameter β, aquantity of available resources of a PUSCH, and a code rate of scheduleddata; a combination of the scheduling information, a ratio of a quantityof bits of the UCI to a quantity of bits of data, a first presetparameter, the parameter β, a quantity of available resources of aPUSCH, and the parameter α; or the like. These information combinationsare merely examples, and this application sets no limitation thereto. Inthis application, the quantity of resources may be a quantity of REs.This is merely an example, and no limitation is set thereto. It shouldbe noted that the quantity of bits of the UCI, the quantity of bits ofthe data, and the quantity of available resources of the PUSCH areagreed on by both the network device and the terminal device, and may bedetermined by the terminal device without being sent by the networkdevice.

The first preset parameter may be a product of a first preset value anda quantity of frequency domain resource elements REs scheduled for thePUSCH and/or a product of a second preset value and a quantity ofsymbols of the PUSCH. In other words, the first preset parameter may bethe product of the first preset value and the quantity of frequencydomain resource elements REs scheduled for the PUSCH, or the firstpreset parameter may be the product of the second preset value and thequantity of symbols of the PUSCH, or the first preset value may be oneof the product of the first preset value and the quantity of frequencydomain resource elements REs scheduled for the PUSCH and the product ofthe second preset value and the quantity of symbols of the PUSCH.Optionally, the first preset value may be a bandwidth and/or a quantityof symbols. In other words, the first preset value may be the bandwidth,or the first preset value may be the quantity of symbols, or the firstpreset value may be one of the bandwidth and the quantity of symbols.

In this application, different from LTE, in NR, when UCI information isHARQ-ACK information, the HARQ-ACK information is transmitted in apuncturing manner when being less than 2 bits, and is transmitted in arate matching manner when being greater than 2 bits; or when UCIinformation is CSI information, the CSI information is further dividedinto a CSI part 1 and a CSI part 2. A priority of the CSI part 1 ishigher, and a priority of the CSI part 2 is lower. A value of the CSIpart 2 may be determined based on a value of the CSI part 1. A quantityof bits of the CSI part 2 is much larger than that in LTE. Both the CSIpart 1 and the CSI part 2 are transmitted in a rate matching manner. Tosupport proper allocation for the UCI and data during initialtransmission in NR, resources may be properly allocated based on anactual ratio of a quantity of bits of the UCI to a quantity of bits ofthe data.

When the first information is the combination of the schedulinginformation, the ratio of the quantity of bits of the UCI to the sum ofthe quantity of bits of the UCI and the quantity of bits of the data,the first preset parameter, the parameter β, and the quantity ofavailable resources of the physical uplink shared channel PUSCH, in apossible implementation, the quantity of resources for sending the UCIis determined according to Formula (1).

Formula (1) may be:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B + O} \right\rceil,C} \right)}},} & (1)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is an offset of the UCI relativeto a reference code rate. It should be noted that the reference coderate may be a ratio of the quantity of available resources of the dataduring initial transmission to the sum of the quantity of bits of theUCI and the quantity of bits of the data. This is merely an example inthis application, and no specific limitation is set thereto.

Optionally, O may represent a quantity of bits that is obtained after aCRC check bit is added to the UCI. In this case, B represents a quantityof bits that is obtained after CRC bits are added to the data. In thiscase, B may be a quantity of bits that is obtained after a transportblock (TB) is segmented into code blocks and then cyclic redundancycheck (CRC) bits are added to each code book. This step is usuallyperformed before each code book is entered into an encoder. A mayrepresent a quantity of available REs of the data during initialtransmission when the UCI is not considered in NR. Alternatively, A maybe represented as a quantity of available REs that are used to transmitthe data after the UCI is actually considered. Optionally, O mayrepresent a quantity of bits remaining after some information isdiscarded according to a specific rule when the quantity of bits of theUCI is excessively large.

C may represent a maximum quantity of REs that can be used to transmitcurrent UCI in scheduled available REs of the data during currenttransmission. If the current UCI is the CSI part 2, and a data ratematching manner is used for the HARQ-ACK, a possible implementation is aquantity of scheduled REs of the data except a quantity of REs of theCSI part 1 and the HARQ-ACK. If the current UCI is the CSI part 2, and adata puncturing manner is used for the HARQ-ACK, a possibleimplementation is a quantity of scheduled REs of the data except aquantity of REs of the CSI part 1.

It can be learned from Formula (1) that, the quantity of bits of the UCIis placed at a denominator, so that a calculation result on the left canbe controlled to be less than a value of a scheduled resource A byproperly configuring a value of the parameter β. Therefore, dataresources are not all occupied by the UCI during initial transmission.It can be learned that, during resource allocation, bit information ofthe UCI is actually more important than that of the data. Therefore, ifresource allocation is performed completely based on the ratio betweenthe quantities of bits, a code rate of the UCI is actually higher. Inthis case, the code rate may be further adjusted by properly configuringthe parameter β.

The ratio of the quantity of bits of the UCI to the quantity of bits ofthe data is used as a proportion baseline for resource division, and theratio is further adjusted by using the parameter β, so that a case inwhich all resources are allocated to the UCI during initial transmissionand the data cannot be transmitted can be avoided.

In another possible implementation, the quantity of resources forsending the UCI is determined according to Formula (2).

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (2)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is a preset offset. The presetoffset may be set based on experience.

Optionally, O may represent a quantity of bits that is obtained after aCRC check bit is added to the UCI. In this case, B represents a quantityof bits that is obtained after CRC bits are added to the data. In thiscase, B may be a quantity of bits that is obtained after a TB issegmented into code blocks and then CRC bits are added to each codebook. This step is usually performed before each code book is enteredinto an encoder. A may represent a quantity of available REs of the dataduring initial transmission when the UCI is not considered in NR.Alternatively, A may be represented as a quantity of available REs thatare used to transmit the data after the UCI is actually considered.Optionally, O may represent a quantity of bits remaining after someinformation is discarded according to a specific rule when the quantityof bits of the UCI is excessively large.

C may represent a maximum quantity of REs that can be used to transmitcurrent UCI in scheduled available REs of the data during currenttransmission. If the current UCI is the CSI part 2, and a data ratematching manner is used for the HARQ-ACK, a possible implementation is aquantity of scheduled REs of the data except a quantity of REs of theCSI part 1 and the HARQ-ACK. If the current UCI is the CSI part 2, and adata puncturing manner is used for the HARQ-ACK, a possibleimplementation is a quantity of scheduled REs of the data except aquantity of REs of the CSI part 1.

According to Formula (2), resource allocation is implemented byadjusting the ratio of the quantity of bits of the data to the quantityof bits of the UCI. The ratio of the quantity of bits of the UCI to thequantity of bits of the data is used as a proportion baseline forresource division, and the ratio is adjusted by using the parameter β,so that a case in which all resources are allocated to the UCI duringinitial transmission and the data cannot be transmitted can be avoided.

This application further provides a possible implementation in which thequantity of resources for sending the UCI is determined according toFormula (3).

Formula (3) may be:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{\beta_{offset}^{PUSCH}{O \cdot A}}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (3)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is an offset of the UCI relativeto a reference code rate.

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is a preset offset. The presetoffset may be set based on experience.

Optionally, O may represent a quantity of bits that is obtained after aCRC check bit is added to the UCI. In this case, B represents a quantityof bits that is obtained after CRC bits are added to the data. In thiscase, B may be a quantity of bits that is obtained after a TB issegmented into code blocks and then CRC bits are added to each codebook. This step is usually performed before each code book is enteredinto an encoder. A may represent a quantity of available REs of the dataduring initial transmission when the UCI is not considered in NR.Alternatively, A may be represented as a quantity of available REs thatare used to transmit the data after the UCI is actually considered.Optionally, O may represent a quantity of bits remaining after someinformation is discarded according to a specific rule when the quantityof bits of the UCI is excessively large.

C may represent a maximum quantity of REs that can be used to transmitcurrent UCI in scheduled available REs of the data during currenttransmission. If the current UCI is the CSI part 2, and a data ratematching manner is used for the HARQ-ACK, a possible implementation is aquantity of scheduled REs of the data except a quantity of REs of theCSI part 1 and the HARQ-ACK. If the current UCI is the CSI part 2, and adata puncturing manner is used for the HARQ-ACK, a possibleimplementation is a quantity of scheduled REs of the data except aquantity of REs of the CSI part 1.

According to Formula (3), resource allocation is implemented byadjusting a weighted ratio of the quantity of bits of the data to thequantity of bits of the UCI. The ratio of the quantity of bits of theUCI to the quantity of bits of the data is used as a proportion baselinefor resource division, and the ratio is adjusted by using the parameterβ, so that a case in which all resources are allocated to the UCI duringinitial transmission and the data cannot be transmitted can be avoided.

When the first information is the combination of the schedulinginformation, the first preset parameter, the parameter β, the quantityof available resources of the PUSCH, and the code rate for schedulingthe data, in a possible implementation, the terminal device determines,according to Formula (4), the quantity of resources for sending the UCI.

Formula (4) may be:

Q′=min(┌O·β _(offset) ^(PUSCH) ·R┐,C)  (4), where

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, R is the code rate of the data, C is a maximumquantity of resources for transmitting the UCI in a quantity ofscheduled available resources of the data during transmission, andβ_(offset) ^(PUSCH) is a preset offset. The preset offset may be setbased on experience.

Optionally, O may represent a quantity of bits that is obtained after aCRC check bit is added to the UCI, C may represent a maximum quantity ofREs that can be used to transmit current UCI in scheduled available REsof the data during current transmission. If the current UCI is the CSIpart 2, and a data rate matching manner is used for the HARQ-ACK, apossible implementation is a quantity of scheduled REs of the dataexcept a quantity of REs of the CSI part 1 and the HARQ-ACK. If thecurrent UCI is the CSI part 2, and a data puncturing manner is used forthe HARQ-ACK, a possible implementation is a quantity of scheduled REsof the data except a quantity of REs of the CSI part 1. Optionally, Omay represent a quantity of bits remaining after some information isdiscarded according to a specific rule when the quantity of bits of theUCI is excessively large.

R in Formula (4) represents the code rate of the data, and the code rateof the data is a code rate corresponding to an MCS. The UE uniquelydetermines R based on an MCS indicated in data scheduling, andcalculates a quantity of available REs of the corresponding UCI based onR. The code rate is a code rate used for actual data transmission, andthe foregoing problem does not occur.

The terminal device uses R as a reference code rate according to Formula(4) and adjusts the code rate by using the parameter β, so that a casein which all resources are allocated to the UCI during initialtransmission and the data cannot be transmitted can be avoided.

When the first information is the combination of the schedulinginformation, the ratio of the quantity of bits of the UCI to thequantity of bits of the data, the first preset parameter, the parameterβ, the quantity of available resources of the PUSCH, and the parameterα, in a possible implementation, the terminal device determines,according to Formula (5), the quantity of resources for sending the UCI.

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil,{\alpha C}} \right)}},} & (5)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is an offset of the UCI relative to areference code rate, and α is a parameter. In this case, the referencecode rate may be a ratio of the quantity of available resources of thedata during initial transmission to the quantity of bits of the data.This is merely an example in this application, and no limitation is setthereto.

Optionally, O may represent a quantity of bits that is obtained after aCRC check bit is added to the UCI. In this case, B represents a quantityof bits that is obtained after CRC bits are added to the data. In thiscase, B may be a quantity of bits that is obtained after a TB issegmented into code blocks and then CRC bits are added to each codebook. This step is usually performed before each code book is enteredinto an encoder. A may represent a quantity of available REs of the dataduring initial transmission when the UCI is not considered in NR.Alternatively. A may be represented as a quantity of available REs thatare used to transmit the data after the UCI is actually considered.Optionally, O may represent a quantity of bits remaining after someinformation is discarded according to a specific rule when the quantityof bits of the UCI is excessively large.

C may represent a maximum quantity of REs that can be used to transmitcurrent UCI in scheduled available REs of the data during currenttransmission. If the current UCI is the CSI part 2, and a data ratematching manner is used for the HARQ-ACK, a possible implementation is aquantity of scheduled REs of the data except a quantity of REs of theCSI part 1 and the HARQ-ACK. If the current UCI is the CSI part 2, and adata puncturing manner is used for the HARQ-ACK, a possibleimplementation is a quantity of scheduled REs of the data except aquantity of REs of the CSI part 1.

The parameter α is added to an item on the right in Formula (5) to limita value of the UCI, so as to prevent the UCI from occupying allavailable REs. Optionally, the parameter α is usually less than 1. Theparameter α may be configured by using signaling, for example,configured by using higher layer signaling, which may be RRC signaling,or may be carried by a MAC-CE.

The terminal device limits, by using the parameter α, an RE occupied bythe UCI, so that a case in which all resources are allocated to the UCIduring initial transmission and the data cannot be transmitted can beavoided.

It should be noted that a value of C in the foregoing Formulas (1) to(5) is strongly correlated with a mapping manner of the UCI, in otherwords, the value of C is associated with the mapping manner of the UCI.On a basis that both the ACK and the CSI can be distributed on REs ofdifferent RBs in frequency domain, possible mapping manners of the UCImay be the following several manners.

Manner 1: There is a limitation in time domain and there is an increasein frequency domain.

A quantity of symbols to which the UCI is mapped on a time domainresource is less than or equal to a third preset value and a quantity ofsymbols to which the UCI is mapped on a frequency domain resource isrelated to a UCI type. The third preset value is one or more of thefollowing values: a preset quantity of symbols near a demodulationreference signal (DMRS), a value related to the quantity of symbols ofthe PUSCH, a value related to whether the PUSCH supports frequencyhopping, a value related to whether an additional DMRS is supported, andthe like.

For example, as shown in FIG. 3, the third preset value may be thepreset quantity of symbols near the DMRS, and may be a fixed value thatis set based on experience, for example, may indicate fixed N symbolsnear the DMRS, where N is greater than or equal to 1. As shown in A inFIG. 3, N is 2, and the third preset value is 2. In this case, the valueof C is a product of the symbol quantity 2 and a bandwidth.

The third preset value is the value related to the quantity of symbolsof the PUSCH and is associated with a time domain length indication ofthe PUSCH, and is specifically determined based on a time domainindication table of the PUSCH. As shown in B in FIG. 3, when the PUSCHis 7 symbols, the third preset value may indicate one symbol; and whenthe PUSCH is 14 symbols, the third preset value may indicate twosymbols. For example, when the PUSCH is 7 symbols, the value of C may bea product of the symbol quantity 1 and a bandwidth.

The third preset value may be the value related to whether the PUSCHsupports frequency hopping. As shown in C in FIG. 3, when frequencyhopping is supported, the symbol is symmetrically distributed on afrequency hopping resource. For example, when the PUSCH does not supportfrequency hopping, the value indicates a symbol 1 or 2. When the PUSCHsupports frequency hopping, the value indicates the symbol 1 and asymbol 8. For example, when the PUSCH does not support frequencyhopping, the value of C may be a product of a symbol quantity 1 and abandwidth.

Alternatively, the third preset value may be the value related towhether an additional DMRS is supported. When there is one DMRS, thequantity of the symbols is 1, and when there are two DMRSs, the quantityof the symbols is 2. For example, when there is one DMRS, the value of Cmay be a product of the symbol quantity 1 and a bandwidth.

It should be noted that in these several cases, the value of C in theforegoing Formulas (1) to (5) is a product of a quantity of symbols anda bandwidth scheduled for the PUSCH.

Optionally, the UCI is discretely mapped in frequency domain, and a unitof discrete distribution may be a resource block (RB), a resource blockgroup (RBG), a precoding resource group (PRG), or a subband.

A possible mapping manner of the UCI in frequency domain is that the UCIis first mapped at a large granularity and then mapped at a smallgranularity. As shown in FIG. 4A, FIG. 4B, FIG. 5A, and FIG. 5B, the UCIis mapped in a number sequence and is first mapped within an RBG range,that is, the UCI is mapped in the following sequence: a first RE in anRB 0 of an RBG 0, a first RE in an RB 0 of an RBG 1, a first RE in an RB1 of the RBG 0, and a first RE in an RB 1 of the RBG 1.

It should be noted that in this application, a location that is of theUCI and that is represented by a graph is a location of an availableresource of the UCI, and a location marked with a number is a locationof a resource occupied by the UCI information. All numbers in thisapplication are merely examples, and no limitation is set thereto. Thesame description is provided for subsequent types.

It should be noted that the RB and the RBG herein are only examples ofdifferent granularities in frequency domain. Any mapping manner thatmeets a condition that the UCI is first mapped at a large granularityand then mapped at a small granularity shall fall within the protectionscope of this application. Mapping to a first RE in an RB is only onemanner, and the UCI may be alternatively mapped to any RE in an RB in apredefined manner.

A and B in FIG. 4A and FIG. 4B show an example in which the UCI is firstmapped to one symbol and a “frequency domain first” mapping manner isused. B in FIG. 4A and FIG. 4B shows that locations occupied by the UCIare relatively staggered from each other. A and B in FIG. 5A and FIG. 5Bshow a “time domain first” manner, and B in FIG. 5A and FIG. 5B showsthat locations occupied by the UCI are relatively staggered from eachother. In a case of a plurality of symbols, it can be further consideredto perform specific offset between two symbols, to reduce impact on thedata or the CSI when puncturing is performed for the ACK.

Manner 2: There is a limitation in frequency domain and there is anincrease in time domain.

A quantity of symbols to which the UCI is mapped on a frequency domainresource is less than or equal to a fourth preset value and a quantityof symbols to which the UCI is mapped on a time domain resource isrelated to a UCI type. The fourth preset value is one or more of thefollowing values: a preset quantity of REs, a value related to thequantity of symbols of the PUSCH, a value related to a bandwidth of thePUSCH, a value related to a phase tracking reference signal (PTRS) ofthe PUSCH, and the like.

The fourth preset value may be the preset quantity of REs. As shown in Ain FIG. 6, the preset quantity of REs may be a fixed value that is setbased on experience, and the value indicates several REs, for example,may be 2, 3, or 4. In this case, the value of C is a product of thequantity of REs and a quantity of symbols in time domain.

The fourth preset value may be the value related to the quantity ofsymbols of the PUSCH. As shown in B in FIG. 6, when the quantity ofsymbols is relatively small, the value is relatively large. For example,when the PUSCH is 14 symbols, the value indicates two REs; when thePUSCH is 7 symbols, the value indicates four REs. A frequency domainlocation of an RE in the PUSCH may be predefined, for example, may be anRE on a bandwidth edge, or may be REs in some RBs of some RBGs, wherethe RBG is bandwidth-related. For example, when the PUSCH is 14 symbols,the value indicates two REs, and the value of C is a product of the REquantity 2 and a quantity of symbols in time domain.

The fourth preset value may be the value related to the bandwidth of thePUSCH. As shown in C in FIG. 6, when the bandwidth is relatively large,the value is relatively large. When the PUSCH is one RB, the valueindicates one RE. When the PUSCH is two RBs, the value indicates twoREs. Specifically, the fourth preset value may be alternatively relatedto a frequency domain discrete granularity, for example, an RB, an RBG,a PRG, or a subband. For example, when the PUSCH is one RB, the valueindicates one RE, and the value of C is a product of the RE quantity 1and a quantity of symbols in time domain.

The fourth preset value may be the value related to the PTRS of thePUSCH. When there is a PTRS, a location near the PTRS may be selected asa location of the RE, to achieve a relatively good frequency offsetcorrection and channel estimation effect. When there are a plurality ofPTRSs, REs of a same quantity as the PTRSs are selected, and details maybe shown in FIG. 7. A location occupied by the PTRS is not an availableresource of the UCI.

It should be noted that in these cases, the value of C in the foregoingFormulas (1) to (5) is a product of a quantity of REs in frequencydomain and a quantity of symbols in time domain.

Optionally, the UCI may also be discretely mapped in time domain, and aunit of discrete distribution may be a mini-slot, or a slot aggregation.

For a specific RE mapping sequence, there are two kinds ofconsiderations in A and B in FIG. 8A and FIG. 8B: “frequency domainfirst” and “time domain first”. “Frequency domain first” corresponds toB in FIG. 8B, and “time domain first” corresponds to A in FIG. 8A.

It should be noted that the UCI in this application may be any type ofUCI, and may be the HARQ-ACK, the CSI part 1, or the CSI part 2.Optionally, the UCI is the CSI part 1 or the ACK.

Mapping manners of the ACK and the CSI part 1 may be kept consistent.When both the ACK and the CSI part 1 exist, an available resource may befurther evenly allocated. For example, for the RBG in Manner 1, the CSIpart 1 is mapped to a resource whose RBG number is an odd number, andthe ACK is mapped to a resource whose RBG number is an even number.Within an odd-numbered resource and an even-numbered resource,allocation is further performed based on the description of Manner 1.

For another example, in Manner 2, a quantity of REs in frequency domainis also evenly allocated, an odd-numbered available RE is used for theCSI part 1, and an even-numbered available RE is used for the ACK.Keeping the mapping manners of the ACK and the CSI part 1 consistenthelps simplify a protocol.

Further, to transmit the CSI part 2, multiplexing may be performed forthe CSI part 2 and the data. Because a “frequency domain first” mappingmanner is used for the data, the CSI part 2 needs to be mapped aftermultiplexing is performed for the CSI part 2 and the data.

In a simple manner, if the HARQ-ACK is mapped in a puncturing manner,after mapping for the CSI part 1 ends, the CSI part 2 is placed in frontof the data, and then the CSI part 2 is mapped in the “frequency domainfirst” manner together with the data. The CSI part 1 needs to be skippedin the mapping process.

If the HARQ-ACK is mapped in a rate matching manner, after both mappingfor the HARQ-ACK and mapping for the CSI part 1 end, the CSI part 2 andthe data start to be mapped, as shown in A in FIG. 9A. During mapping,locations occupied by the HARQ-ACK and the CSI part 1 need to be skippedfor the CSI part 2.

B in FIG. 9B shows that after the CSI part 1 and the ACK are mapped, theCSI part 2 is mapped and symbols occupied by the CSI part 1 and the ACKare skipped during mapping for the CSI part 2; and then, the data ismapped. During mapping, the symbols occupied by the CSI part 1 and theACK need to be skipped for the CSI part 2.

C in FIG. 9C shows that a two-part mapping method is used in a case offrequency hopping. Mapping is performed in “time domain first” on twoparts of resources.

When the mapping manner in Manner 2 is used, a mapping manner of the CSIpart 2 may be shown in FIG. 10A and FIG. 10B.

Optionally, because the network device may control the UCI to be withina configured resource, the foregoing Formulas (1) to (4) may besimplified. Specifically, the terminal device may determine, accordingto the following Formula (6), Formula (7), Formula (8), or Formula (9),the quantity of resources for sending the UCI.

Formula (6) is:

$\begin{matrix}{{Q^{\prime} = \left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B + O} \right\rceil},} & (6)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,and β_(offset) ^(PUSCH) is an offset of the UCI relative to a referencecode rate.

Formula (7) is:

$\begin{matrix}{{Q^{\prime} = \left\lceil \frac{O \cdot A}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil},} & (7)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,and β_(offset) ^(PUSCH) is a preset offset.

Formula (8) is:

$\begin{matrix}{{Q^{\prime} = \left\lceil \frac{\beta_{offset}^{PUSCH}{O \cdot A}}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil},} & (8)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,and β_(offset) ^(PUSCH) is a preset offset.

Formula (9) is:

Q′=┌O·β _(offset) ^(PUSCH) ·R┐  (9), where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, R is the code rate of the data, and β_(offset)^(PUSCH) is a preset offset.

The parameters in the foregoing Formulas (6) to (9) have been alreadyexplained in the foregoing embodiment, and details are not describedherein.

It is indicated in the foregoing embodiment that, the terminal devicedetermines, based on the first information, the quantity of resourcesfor sending the UCI, where the first information includes any one of thefollowing information combinations: a combination of schedulinginformation, a ratio of a quantity of bits of the UCI to a sum of thequantity of bits of the UCI and a quantity of bits of data, a firstpreset parameter, a parameter β, and a quantity of available resourcesof a PUSCH; a combination of scheduling information, a first presetparameter, a parameter β, a quantity of available resources of a PUSCH,and a code rate of scheduled data; or a combination of schedulinginformation, a ratio of a quantity of bits of the UCI to a quantity ofbits of data, a first preset parameter, a parameter β, a quantity ofavailable resources of a PUSCH, and a parameter α; and the terminaldevice sends the UCI to the network device based on the determinedquantity of resources for sending the UCI. Because the terminal deviceuses the ratio of the quantity of bits of the UCI to the quantity ofbits of the data as a proportion baseline for resource division whendetermining the quantity of resources for sending the UCI, a case inwhich all resources are allocated to the UCI during initial transmissionand the data cannot be transmitted can be avoided.

Based on a same technical concept, FIG. 11 is a schematic diagram of anapparatus according to this application. The apparatus may be a terminaldevice, and may perform the method performed by the terminal device inany one of the foregoing embodiments.

The terminal device 1100 includes at least one processor 1101 and atransceiver 1102, and optionally further includes a memory 1103. Theprocessor 1101, the transceiver 1102, and the memory 1103 are connectedto each other.

The processor 1101 may be a general-purpose central processing unit, amicroprocessor, an application-specific integrated circuit, or one ormore integrated circuits configured to control program execution in theembodiments of this application.

The transceiver 1102 is configured to communicate with another device ora communications network, and the transceiver includes a radio frequencycircuit.

The memory 1103 may be a read-only memory or another type of staticstorage device that can store static information and an instruction, arandom access memory or another type of dynamic storage device that canstore information and an instruction, or may be an electrically erasableprogrammable read-only memory, a compact disc read-only memory oranother compact disc storage, an optical disc storage (including acompact disc, a laser disc, an optical disc, a digital versatile disc, aBlu-ray disc, and the like), a magnetic disk storage medium or anothermagnetic storage device, or any other medium that can be used to carryor store expected program code in a form of an instruction or datastructure and that can be accessed by a computer. However, the memory1103 is not limited thereto. The memory 1103 may exist independently,and is connected to the processor 1101. Alternatively, the memory 1103may be integrated into the processor. The memory 1103 is configured tostore application program code for executing the embodiments of thisapplication, and the execution is controlled by the processor 1101. Theprocessor 1101 is configured to execute the application program codestored in the memory 1103.

During specific implementation, in an embodiment, the processor 1101 mayinclude one or more CPUs, such as a CPU 0 and a CPU 1 in FIG. 11.

During specific implementation, in an embodiment, the terminal device1100 may include a plurality of processors, such as the processor 1101and a processor 1108 in FIG. 11. Each of the processors may be asingle-core (single-CPU) processor, or may be a multi-core (multi-CPU)processor. Herein, the processor may be one or more devices, circuits,and/or processing cores for processing data (for example, a computerprogram instruction).

It should be understood that the terminal device may be configured toimplement the steps performed by the terminal device in the uplinkcontrol information transmission method provided in this application.For related features, refer to the foregoing descriptions. Details arenot described herein.

In this application, the terminal device may be divided into functionmodules based on the foregoing method examples. For example, functionmodules may be obtained through division based on correspondingfunctions, or two or more functions may be integrated into oneprocessing module. The integrated module may be implemented in a form ofhardware, or may be implemented in a form of a software function module.It should be noted that, in this application, the module division is anexample, and is merely logical function division. During actualimplementation, there may be another division manner. For example, whenfunction modules are obtained through division based on correspondingfunctions. FIG. 12 is a schematic diagram of an apparatus. The apparatusmay be the terminal device in the foregoing embodiments. The apparatusincludes a processing unit 1201 and a communications unit 1202.

The processing unit 1201 is configured to determine, based on firstinformation, a quantity of resources for sending UCI. The firstinformation includes any one of the following information combinations:a combination of scheduling information, a ratio of a quantity of bitsof the UCI to a sum of the quantity of bits of the UCI and a quantity ofbits of data, a first preset parameter, a parameter β, and a quantity ofavailable resources of a PUSCH; a combination of scheduling information,a first preset parameter, a parameter β, a quantity of availableresources of a PUSCH, and a code rate of scheduled data; or acombination of scheduling information, a ratio of a quantity of bits ofthe UCI to a quantity of bits of data, a first preset parameter, aparameter β, a quantity of available resources of a PUSCH, and aparameter α.

The communications unit 1202 is configured to send the UCI to a networkdevice based on the quantity of resources that is for sending the UCIand that is determined by the processing unit 1201.

Optionally, the first preset parameter is a product of a first presetvalue and a quantity of frequency domain resource elements REs scheduledfor the PUSCH and/or a product of a second preset value and a quantityof symbols of the PUSCH.

Optionally, the first preset value is a bandwidth and/or a quantity ofsymbols.

Optionally, the processing unit 1201 is specifically configured to:

determine, according to Formula (1), Formula (2), Formula (3), Formula(4), or Formula (5), the quantity of resources for sending the UCI.

Formula (1) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B + O} \right\rceil,C} \right)}},} & (1)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is an offset of the UCI relativeto a reference code rate.

Formula (2) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (2)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is a preset offset.

Formula (3) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{\beta_{offset}^{PUSCH}{O \cdot A}}{B + {\beta_{offset}^{PUSCH}O}} \right\rceil,C} \right)}},} & (3)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data, A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, and β_(offset) ^(PUSCH) is a preset offset.

Formula (4) is:

Q′=min(┌O·β _(offset) ^(PUSCH) ·R┐,C)  (4), where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, R is the code rate of the data, C is a maximumquantity of resources for transmitting the UCI in a quantity ofscheduled available resources of the data during transmission, andβ_(offset) ^(PUSCH) is a preset offset.

Formula (5) is:

$\begin{matrix}{{Q^{\prime} = {\min\left( {\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil,{\alpha C}} \right)}},} & (5)\end{matrix}$

where

Q′ is the quantity of resources for sending the UCI, O is the quantityof bits of the UCI, B is the quantity of bits of the data. A is aquantity of available resources of the data during initial transmission,C is a maximum quantity of resources for transmitting the UCI in aquantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is an offset of the UCI relative to areference code rate, and α is a parameter.

Optionally, a value of C is associated with a mapping manner of the UCI.The mapping manner of the UCI includes that a quantity of symbols towhich the UCI is mapped on a time domain resource is less than or equalto a third preset value and a quantity of symbols to which the UCI ismapped on a frequency domain resource is related to a UCI type, or thata quantity of symbols to which the UCI is mapped on a frequency domainresource is less than or equal to a fourth preset value and a quantityof symbols to which the UCI is mapped on a time domain resource isrelated to a UCI type.

Optionally, the third preset value is one or more of the followingvalues:

a preset quantity of symbols near a demodulation reference signal DMRS,a value related to the quantity of symbols of the PUSCH, a value relatedto whether the PUSCH supports frequency hopping, and a value related towhether an additional DMRS is supported.

Optionally, the fourth preset value is one or more of the followingvalues:

a preset quantity of resource elements REs, a value related to thequantity of symbols of the PUSCH, a value related to a bandwidth of thePUSCH, and a value related to a phase tracking reference signal PTRS ofthe PUSCH.

It should be understood that the terminal device may be configured toimplement the steps performed by the terminal device in the uplinkcontrol information transmission method in this application. For relatedfeatures, refer to the foregoing descriptions. Details are not describedherein.

This application further provides a communications apparatus, includinga processing element and a storage element. The storage element isconfigured to store a program, and when the program is invoked by theprocessing element, the communications apparatus is configured toperform the foregoing uplink control information transmission method.

This application further provides a computer storage medium, configuredto store a computer software instruction used by the foregoing networkdevice or terminal device, and the computer storage medium includesprogram code designed to execute the foregoing method embodiments.

A person skilled in the art should understand that the embodiments ofthe present application may be provided as a method, a system, or acomputer program product. Therefore, the embodiments of the presentapplication may use a form of hardware only embodiments, software onlyembodiments, or embodiments with a combination of software and hardware.Moreover, the embodiments of the present application may use a form of acomputer program product that is implemented on one or morecomputer-usable storage media (including but not limited to a magneticdisk memory, a CD-ROM, an optical memory, and the like) that includecomputer-usable program code.

The embodiments of the present application are described with referenceto the flowcharts and/or block diagrams of the method, the device(system), and the computer program product according to the embodimentsof the present application. It should be understood that computerprogram instructions may be used to implement each process and/or eachblock in the flowcharts and/or the block diagrams and a combination of aprocess and/or a block in the flowcharts and/or the block diagrams.These computer program instructions may be provided for ageneral-purpose computer, a dedicated computer, an embedded processor,or a processor of another programmable data processing device togenerate a machine, so that the instructions executed by a computer or aprocessor of another programmable data processing device generate anapparatus for implementing a specific function in one or more processesin the flowcharts and/or in one or more blocks in the block diagrams.

These computer program instructions may be alternatively stored in acomputer readable memory that can instruct a computer or anotherprogrammable data processing device to work in a specific manner, sothat the instructions stored in the computer readable memory generate anartifact that includes an instruction apparatus. The instructionapparatus implements a specific function in one or more processes in theflowcharts and/or in one or more blocks in the block diagrams.

These computer program instructions may be alternatively loaded onto acomputer or another programmable data processing device, so that aseries of operations and steps are performed on the computer or theanother programmable device, thereby generating computer-implementedprocessing. Therefore, the instructions executed on the computer or theanother programmable device provide steps for implementing a specificfunction in one or more processes in the flowcharts and/or in one ormore blocks in the block diagrams.

Apparently, a person skilled in the art can make various modificationsand variations to the embodiments of the present application withoutdeparting from the spirit and scope of this application. In this way,this application is intended to include these modifications andvariations of the embodiments of the present application provided thatthey fall within the scope of the claims of this application and theirequivalent technologies.

1. An apparatus, comprising: one or more processors; and one or morememories coupled to the one or more processors and storing programinginstructions for execution by the one or more processors to: receivefirst indication information, wherein the first indication informationcomprises a parameter β and a parameter α; determine, based on the firstindication information, first information; determine, based on the firstinformation, a quantity of resources for sending uplink controlinformation (UCI), wherein the first information comprises schedulinginformation, a ratio of a quantity of bits of the UCI to a quantity ofbits of data, a first preset parameter, the parameter β, a quantity ofavailable resources of a physical uplink shared channel (PUSCH), and theparameter α, wherein the parameter β is an offset of the UCI, andwherein the parameter α is configured by higher layer signaling and theparameter α is less than 1; and send, based on the determined quantityof resources for sending the UCI, the UCI to a network device.
 2. Theapparatus according to claim 1, wherein the first preset parameter is atleast one of following: a product of a first preset value and a quantityof frequency domain resource elements (REs) scheduled for the PUSCH; ora product of a second preset value and a quantity of symbols of thePUSCH.
 3. The apparatus according to claim 2, wherein the first presetvalue is at least one of a bandwidth or a quantity of symbols.
 4. Theapparatus according to claim 1, wherein the quantity of resources forsending the UCI is determined based on a value of$\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil$and a value of αC, wherein O is the quantity of bits of the UCI, B isthe quantity of bits of the data, A is a quantity of available resourcesof the data, C is a maximum quantity of resources for transmitting theUCI in a quantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is the parameter β, and α is theparameter α.
 5. The apparatus according to claim 1, wherein the UCIcomprises at least one of hybrid automatic repeatrequest-acknowledgement (HARQ-ACK) information or channel stateinformation (CSI).
 6. The apparatus according to claim 1, wherein theapparatus is a terminal or a chip.
 7. A method, comprising: receivingfirst indication information, wherein the first indication informationcomprises a parameter β and a parameter α; determining, based on thefirst indication information, first information; determining, based onthe first information, a quantity of resources for sending uplinkcontrol information (UCI), wherein the first information comprisesscheduling information, a ratio of a quantity of bits of the UCI to aquantity of bits of data, a first preset parameter, the parameter β, aquantity of available resources of a physical uplink shared channel(PUSCH), and the parameter α, wherein the parameter β is an offset ofthe UCI, and wherein the parameter α is configured by higher layersignaling and the parameter α is less than 1; and sending, based on thedetermined quantity of resources for sending the UCI, the UCI to anetwork device.
 8. The method according to claim 7, wherein the firstpreset parameter is at least one of following: a product of a firstpreset value and a quantity of frequency domain resource elements (REs)scheduled for the PUSCH; or a product of a second preset value and aquantity of symbols of the PUSCH.
 9. The method according to claim 8,wherein the first preset value is at least one of a bandwidth or aquantity of symbols.
 10. The method according to claim 7, wherein thequantity of resources for sending the UCI is determined based on a valueof$\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil$and a value of αC, wherein O is the quantity of bits of the UCI, B isthe quantity of bits of the data, A is a quantity of available resourcesof the data, C is a maximum quantity of resources for transmitting theUCI in a quantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is the parameter β, and α is theparameter α.
 11. The method according to claim 7, wherein the UCIcomprises at least one of hybrid automatic repeatrequest-acknowledgement (HARQ-ACK) information or channel stateinformation (CSI).
 12. The method according to claim 7, wherein themethod is performed by a terminal or a chip.
 13. An apparatus,comprising: one or more processors; and one or more memories coupled tothe one or more processors and storing programing instructions forexecution by the one or more processors to: send first indicationinformation to a terminal device, wherein the first indicationinformation indicates a parameter β and a parameter α comprised in firstinformation, and the first information further comprises schedulinginformation, a ratio of a quantity of bits of uplink control information(UCI) to a quantity of bits of data, a first preset parameter, and aquantity of available resources of a physical uplink shared channel(PUSCH), wherein the parameter β is an offset of the UCI, wherein theparameter α is configured by higher layer signaling and the parameter αis less than 1, and wherein the first information is used to determine aquantity of resources for the UCI; and receive, on the resources for theUCI, the UCI from the terminal device.
 14. The apparatus according toclaim 13, wherein the first preset parameter is at least one offollowing: a product of a first preset value and a quantity of frequencydomain resource elements (REs) scheduled for the PUSCH; or a product ofa second preset value and a quantity of symbols of the PUSCH.
 15. Theapparatus according claim 14, wherein the first preset value is at leastone of a bandwidth or a quantity of symbols.
 16. The apparatus accordingto claim 13, wherein the quantity of resources for the UCI is determinedbased on a value of$\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil$and a value of αC, wherein O is the quantity of bits of the UCI, B isthe quantity of bits of the data, A is a quantity of available resourcesof the data, C is a maximum quantity of resources for the UCI in aquantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is the parameter β, and α is theparameter α.
 17. The apparatus according to claim 13, wherein the UCIcomprises at least one of hybrid automatic repeatrequest-acknowledgement (HARQ-ACK) information or channel stateinformation (CSI).
 18. The apparatus according to claim 13, wherein theapparatus is a network device or a unit for a network device.
 19. Amethod, comprising: sending first indication information to a terminaldevice, wherein the first indication information indicates a parameter βand a parameter α comprised in first information, and the firstinformation further comprises scheduling information, a ratio of aquantity of bits of uplink control information (UCI) to a quantity ofbits of data, a first preset parameter, and a quantity of availableresources of a physical uplink shared channel (PUSCH), wherein theparameter β is an offset of the UCI, wherein the parameter α isconfigured by higher layer signaling and the parameter α is less than 1,and wherein the first information is used to determine a quantity ofresources for the UCI; and receiving, on the resources for the UCI, theUCI from the terminal device.
 20. The method according to claim 19,wherein the first preset parameter is at least one of following: aproduct of a first preset value and a quantity of frequency domainresource elements (REs) scheduled for the PUSCH; or a product of asecond preset value and a quantity of symbols of the PUSCH.
 21. Themethod according to claim 20, wherein the first preset value is at leastone of a bandwidth or a quantity of symbols.
 22. The method according toclaim 19, wherein the quantity of resources for the UCI is determinedbased on a value of$\left\lceil \frac{O \cdot A \cdot \beta_{offset}^{PUSCH}}{B} \right\rceil$and a value of αC, wherein O is the quantity of bits of the UCI, B isthe quantity of bits of the data, A is a quantity of available resourcesof the data, C is a maximum quantity of resources for the UCI in aquantity of scheduled available resources of the data duringtransmission, β_(offset) ^(PUSCH) is the parameter β, and α is theparameter α.
 23. The method according to claim 19, wherein the UCIcomprises at least one of hybrid automatic repeatrequest-acknowledgement (HARQ-ACK) information or channel stateinformation (CSI).
 24. The method according to claim 19, wherein themethod is performed by a network device or a unit for a network device.